baber/WOPTO huggingface dataset:
Patent CA-2010257-C (CA)
Title: Multi-layer structure polymer and resin composition
Inventor: MAEDA KATSUAKI
IPC: C08F285/00
Filed: 1990-02-16
Granted: 1997-06-17
Abstract: A multi-layer structure polymer (A) comprising (i) 2 to 30% by weight of an alkyl methacrylate unit, (ii) 50 to 80% by weight of an alkyl acrylate unit, (iii) 5 to 20% by weight of an unsaturated nitrile unit and (iv) 5 to 40% by weight of an aromatic vinyl unit, wherein:         (a) the multi-layer structure polymer consists essentially of an inner layer and an outer layer in a ring form, the portion of the inner layer (.beta. layer) within the ring has an average diameter of 2,000 to 6,500 .ANG., (b) the outer layer (.alpha. layer) portion surround-ing the inner layer in the ring form has an average thickness of 200 to 500 .ANG., (c) the inner layer portion has a plurality of small particles (.gamma. layer) totally micro-dispersed, and (d) the multi-layer structure polymer has an acetone-insoluble portion having (i) a swell degree in methyl ethyl ketone of 1.5 to 10 and (ii) a tensile modulus of 1,000 to 10,000 kg/cm, a resin composition having excellent weatherability and impact resistance comprising the multi-layer structure polymer (A) and at least one thermoplastic resin, and a molded article produced therefrom.
Patent CA-2012851-C (CA)
Title: Purinyl and pyrimidinyl tetrahydrofurans
Inventor: ZAHLER ROBERT
IPC: C07D473/00
Filed: 1990-03-22
Granted: 2000-07-11
Abstract: Antiviral activity is exhibited by compounds having the formula (see formula I) and pharmaceutically acceptable salts thereof wherein R1 is a purine or pyrimidine base or an analog thereof and R2 and R3 are independently hydrogen, -PO3H2 or (see formula II) wherein X7 is hydrogen, alkyl, substituted alkyl and aryl.
Patent CA-2019457-C (CA)
Title: Stretchable shaped absorbent garment
Inventor: WINTERS CATHY LEE
IPC: A61F13/49
Filed: 1990-06-20
Granted: 2001-03-20
Abstract: A stretchable absorbent garment having a fluid-pervious inner layer, an outer layer, and an absorbent structure located between said inner and outer layers, and at least two generally parallel elastomeric strands stretch bonded to the garment along its length such that when in a relaxed state, all of the abode described elements are reduced in length.
Patent CA-2020668-C (CA)
Title: Fused or hybrid protein comprising viral antigen and lymphokine
Inventor: FUJISAWA YUKIO
IPC: C12N1/21
Filed: 1990-07-06
Granted: 2001-10-02
Abstract: Disclosed are (1) a fused protein obtained by combining an antigen used for vaccine and a lymphokine by the application of gene engineering, (2) a recombinant DNA containing a nucleotide sequence coding for the above fused protein, (3) a transformant bearing the above recombinant DNA, (4) a method for producing the fused protein which comprises cultivating the above transformant, producing and accumulating the above fused protein in a culture, and collecting the fused protein, and (5) a hybrid protein obtained by chemically combining an antigen used for vaccine with a lymphokine. The resulting fused and hybrid proteins have strong immunogenicity.
Patent CA-2021910-C (CA)
Title: Thermally predictable disk drive mechanism
Inventor: SLEGER ROGER R
IPC: G11B25/04
Filed: 1990-07-25
Granted: 1995-10-31
Abstract: A disk drive having a base  (1)  and a cover  (12), enclosing the memory disks  (3)  and the magnetic head (8) actuator (5,6,7).  The spindle (2) journaling the memory disks (3) and the support (4) for the actuator (5,6,7) are secured to the base (1) and to the cover (12).  The materials of the base (1), the cover (12), the spindle (2) and the support (4), have thermal coefficients of expansion which are at least substantially the same.   Preferably the materials are the same.   Steel  is a preferred material.   The design also provides rigidity between the ends of the rotary mounting (2) of the memory disks and the support (4) for the magnetic head (8)  actuator  (5,6,7)  while providing  flexibility  in the connections between the base (1) and cover (12), and thereby eliminating thermally induced slip at these connections.  Slip between structural parts of a disk drive can prevent reliable writing and reading of data.
Patent CA-2023375-C (CA)
Title: Container
Inventor: LIVESLEY DAVID JOHN
IPC: B65D55/02
Filed: 1990-08-15
Granted: 2001-12-11
Abstract: Provision is made on a container to indicate whether the container has been tampered with. Release of a vacuum from within the container causes a lid of the container to become convex. This causes a coating on the lid to craze and therefore produce a visible change.
Patent CA-2048073-C (CA)
Title: Blow-molded bottle with bi-axially stretched skirt
Inventor: BARTLEY HAROLD DEAN
IPC: B65D1/02
Filed: 1991-07-29
Granted: 1997-07-15
Abstract: A blow-molded carbonated beverage bottle form of polyethylene terephthalate (PET) material has a tubular body and a curved pressure bottom, the pressure bottom is formed with an integral single-thickness skirt which depends from the bottom, inwardly of the outside dimension of the body and extending axially of the body while terminating in a lower annular inwardly turned support ledge.  A method of forming the bottle is disclosed which includes the steps of blowing a preform formed with a skirt portion into a bottle mold and concurrently engaging the portion of the preform while drawing it radially outwardly of a central axis thereby forming a bi-axially stretched support skirt or base and concurrently forming a radially, inwardly-turned support ledge on the bottom of the skirt.  Apparatus for manufacturing a blow-molded bottle of PET material, as described above, is disclosed in which stretching fingers extend into the interior of a mold formed with ends which are received within a skirt portion on a preform.  The fingers are guided by cams during the blowing of the bottle for unison retracting movement out of the interior of the mold, thereby causing the skirt to be spread and bi-axially stretched during blowing.  The fingers are formed with an undercut portion which permits a lower edge of the skirt to fold radially inwardly during blowing to form an inwardly turned ledge on the bottom of the skirt.
Patent CA-2056334-C (CA)
Title: Process for producing benzylphthalazinone derivatives and salts thereof
Inventor: MURAKAMI KAZUKATA
IPC: A61P43/00
Filed: 1991-11-27
Granted: 1999-06-01
Abstract: A process for producing benzylphthalazinone derivatives represented by the general formula (I);          (see fig. I) wherein X is a halogen atom and R' is a lower alkyl group, and salts thereof, which comprises reacting a compound represented by the general formula (II);     (see fig. II) wherein X has the same meaning as mentioned above, or a salt thereof with a compound represented by the general formula (III);                            (see fig. III) wherein R1 has the same meaning as mentioned above or salt thereof in the presenoe of a dehydration-condensation agent. The benzylphthalazinone derivatives thereof are suitable for use as an antihistaminio agent.
Patent CA-2063924-C (CA)
Title: Improvements in plasticising units for screw injection moulding machines
Inventor: MEYER PAUL
IPC: B29C45/62
Filed: 1992-03-25
Granted: 1999-01-26
Abstract: This invention relates to an injection moulding machine and to plasticizing units in the moulding press of the moulding machine for moulding plastics and rubbers.  The plasticizing unit comprises a screw and barrel, a compression zone and a plasticizing zone wherein the helical groove of the screw varies in cross-section such that the material is transferred from the screw into the barrel while being mixed and plasticized.  Furthermore there is a short second zone in which the flow area in the barrel outside of the cylindrical envelope of the screw reduces from full area to zero area for the material to be returned to within the cylindrical interface of the barrel.   The screw is axially movable for the injection action, such that the ram action of the moulding press is carried out by the screw itself.
Patent CA-2067066-C (CA)
Title: Long-nip press, particularly for the dewatering of a fiber web
Inventor: SCHIEL CHRISTIAN
IPC: D21F3/02
Filed: 1992-04-24
Granted: 1996-04-02
Abstract: An extended nip press for the dewatering of a fiber web has an endless flexible press element, like a press jacket or press belt.  A press shoe which has a concave slide surface for the flexible press element, and the slide surface is adapted to the curve of a backing roll.  The shoe is displaceable toward the backing roll in order to press the pressing element against it.  A stationary shoe bed, which is detachably connected to a stationary support, has a depression which is provided with a packing and receives the press shoe to form a pressure chamber so that the shoe bed and the press shoe form a cylinder-piston unit.  The press shoe is coupled to the shoe bed by means of at least one connecting element.  The connecting element is spring biased with respect to the shoe bed and may itself be flexible or be flexibly moved to permit the radial displacement as well as the tilting of the press shoe relative to the shoe bed.
Patent CA-2070464-C (CA)
Inventor: PIERFITTE MICHEL
IPC: A61B6/00
Filed: 1992-06-04
Granted: 2002-12-03
Abstract: In order to acquire measurement data during a nuclear medicine experiment of the tomographic type, with a gamma camera having two detector heads (8a, 9c), each of these heads is directed on a siting centre (28) while the assembly constituted by these two heads rotates around a centre of rotation (2) of the apparatus, the centre of rotation being separated from the siting centre. It is shown that this procedure makes it possible to go faster (34) on the one hand for the acquisition and furthermore to contribute to work involving tomography images which are more exact and more easily calculated. <IMAGE>
Patent CA-2074212-C (CA)
Title: Quick-connect sectional boom members for cranes and the like
Inventor: PECH DAVID J
IPC: B66C23/26
Filed: 1992-07-20
Granted: 1996-01-09
Abstract: A quick-connect system is disclosed for sectional boom members for cranes and the like.  The sectional boom members comprise chords for carrying compressive loads, each chord terminating in an end configured to abut against an end of a chord of an adjacent sectional boom member.  The quick-connect system comrises at least one easily alignable connector secured to the ends of at least one of the chords, the connector comrising a compressive load bearing surface intersected by the intersection of the vertical and horizontal neutral axes of the chord to which the connector is attached.
Patent CA-2077517-C (CA)
Inventor: JEANNET ROLAND
IPC: F16B39/08
Filed: 1992-11-03
Granted: 2004-03-02
Abstract: The invention relates to a toothbrush (20), the brush head (22) of which can be removed from a brush handle (24).  A threaded pin (26) can be moved to a limited extent out of the brush handle (24), counter to the action of a prestressing spring (32), when the brush head (22) is screwed onto the said pin, until a stop catch (36) of the brush head (22) engages in a recess (38) of the brush handle (24) and locks the brush head in the rotational direction, while the prestressing spring (32) holds the brush head (22) under prestress against the brush handle (24).  A firm connection can thus be established simply and rapidly between the brush handle and the brush head, irrespective of the shape of these parts.
Patent CA-2079625-C (CA)
Title: Method of recovering waste heat from edible oil deodorizer and improving product stability
Inventor: BARRADO RAMON RODRIGUEZ
IPC: C11B5/00
Filed: 1992-10-01
Granted: 1997-12-09
Abstract: The invention relates to a process for recovering heat from deodorized edible oils and stabilizing the same comprising:  introducing or injecting non-condensible inert gas into hot deodorized edible oil as the hot deodorized edible oil is cooled by indirectly heat exchanging with crude oil to be deodorized.
Patent CA-2081117-C (CA)
Title: Electromagnetic clutch with improved rotor
Inventor: CERNY ZDENEK
IPC: F16D27/112
Filed: 1991-04-23
Granted: 2002-07-09
Abstract: In a clutch (10) with a stationary electromagnet (46) to couple an ar-mature (56) to a rotor (12), the rotor has inner and outer cylindrical, portions (14, 24) connected at one end by an annular clutch portion (16) with inner and outer arcuate slots ( 18, 22) which extend through the clutch portion (16) from radial locations at the clutching surface (60) to closer radial locations on the other side of the portion (16). The portion (24) may have on its outer surface either a poly V groove (42), or a V groove (472), or gear teeth (166).
Patent CA-2083413-C (CA)
Inventor: GELLERT JOBST ULRICH
IPC: B29C45/74
Filed: 1992-11-19
Granted: 2000-07-04
Abstract: An injection molding nozzle and method of making it having an electrical heating element extending in a pair of alternating coils in a spiral channel around a central melt passage. The heating element has a U-shaped bend near the forward end of the nozzle and two ends at an external terminal-near the rear end. A central wire in the heating element has a fine coiled heating portion extending between two larger diameter conductive portions which extend to the terminal. One of the conductive portions of the central wire is a predetermined length longer than the other and extends in one of the alternating coils of the heating element along a rear portion of the nozzle adjacent the terminal. The heating portion of the wire extends in both of the alternating coils of the heating element along a forward portion of the nozzle so the heating element provides substantially less heat along the rear portion than along the forward portion of the nozzle.
Patent CA-2089009-C (CA)
Title: Wide-range multicolor ir detector
Inventor: SMITH DORAN D
IPC: H01L31/0352
Filed: 1993-02-08
Granted: 1998-11-17
Abstract: An IR photodetector including an IR semiconductor detector with conductive layers on opposite, parallel surfaces.          A semiconductor substrate supports the semiconductor IR detector.  A circuit is connected across the semiconductor IR detector to provide a bias voltage and for measuring current flow through the semiconductor IR detector.  The semiconductor IR detector has a lattice structure made up of a series of potential wells separated by relatively wide potential barriers such that each well has two confined energy levels.  A thin spike barrier is placed in the center of alternate potential wells to tailor the absorption characteristics of the semiconductor IR detector.  Multicolor operation is achieved by selecting the appropriate well widths for a first group of potential wells that are alternately placed between the wells of the first group.
Patent CA-2091438-C (CA)
Title: Semiconductor chip assemblies, methods of making same and components for same
Inventor: KHANDROS IGOR Y
IPC: H01L25/16
Filed: 1991-09-24
Granted: 2000-08-08
Abstract: Semiconductor chip assemblies incorporating flexible, sheet-like elements having terminals thereon overlying the front or rear face of the chip to provide a compact unit. The terminals on the sheet-like element are movable with respect to the chip, so as to compensate for thermal expansion. A resilient element such as a compliant layer interposed between the chip and terminals permits independent movement of the individual terminals toward the chip driving engagement with a test probe assembly so as to permit reliable engagement despite tolerances.
Patent CA-2092512-C (CA)
Title: Process for the reactivation of an activated charcoal catalyst employed in the preparation of 1,1,1,2,3,3,3-heptafluoropropane (r 227)
Inventor: HOPP PETER
IPC: B01J21/18
Filed: 1993-03-25
Granted: 2003-05-06
Abstract: Process for the reactivation of an activated charcoal catalyst employed in the preparation of 1,1,1,2,3,3,3-heptafluoropropane (R 227).        The invention relates to a process for the reactivation of an activated charcoal catalyst employed in the preparation of 1,1,1,2,3,3,3-heptafluoropropane (R 227) in which the catalyst is heated to from 450 to 900°C in a stream of inert gas or under reduced pressure.
Patent CA-2098396-C (CA)
Inventor: KRESGE CHARLES THEODORE
IPC: C01B33/44
Filed: 1992-01-10
Granted: 2003-10-07
Abstract: There is provided a crystalline oxide material with a characteristic X-ray diffraction pattern comprising the above lines. This material may be a layered material, which is swollen or pillared. Upon calcination of the swollen material, the layers col-lapse and condense upon one another in a disordered fashion to form a non-swellable material. However, the swollen layered material may be intercalated with polymeric oxide pillars to maintain layer separation, even after calcination.
Patent CA-2098434-C (CA)
Inventor: PETTA GABRIELE
IPC: E05B65/08
Filed: 1993-06-15
Granted: 1999-02-02
Abstract: In a sliding window it is known to provide a spring loaded clip on the window jamb that releasably holds a plastic stile of one or two moving sashes. Such construction permits the window to be locked only with the sashes  in  a  fully  closed  position,  which  does  not accommodate venting. Moreover, the inherent deformability of plastic stiles makes such windows vulnerable to forced entry.          In accordance with the present invention, there is provided a sliding window with locking means adhesively mounted to a moving sash that can releasably engage the frame of the window such that the moving sash may be locked in an open position as well as a closed position, both with satisfactory resistance to forced entry. In a preferred embodiment, the frame has a series of holes in spaced alignment contiguous to the moving sash, and the locking means comprises a pin adapted to be removably inserted within the holes.
Patent CA-2103695-C (CA)
Title: Low pressure discharge lamp having sintered "cold cathode" discharge electrodes
Inventor: GOLDBURT EFIM
IPC: B22F5/00
Filed: 1993-08-06
Granted: 2003-04-29
Abstract: A fluorescent low pressure discharge lamp is provided with axially mounted cold-cathode electrodes consisting of a sintered shaped mixture of inorganic material including about 50-90% by weight off tungsten and the remainder BaO  or a mixture of BaO, Ca0 and SrO and oxides of Y, Zr or Hf or the rare earths. The electrodes have a uniform density throughout with a porosity of less than 10%.
Patent CA-2104577-C (CA)
Inventor: JOHANSSON ANDERS
IPC: G01F1/69
Filed: 1992-03-19
Granted: 2001-10-23
Abstract: A device for measuring a gas flow (F) has a measuring body (1) in the form of a cylinder, and a heating means (12) for heating the measuring body. A slot (5) extends axially into the cylinder from one end thereof so as to divide a first portion of the cylinder into two symmetrical halves (6a, 6b). The heating means (12) is disposed in a second cylinder portion which is not di-vided by the slot (5). A temperature sensor (13) is arranged in the second cylinder portion, and a temperature sensor (14, 15) is arranged in each cylinder half (6a, 6b). For measuring a gas flow (F), the measuring body (1) is so disposed in the gas flow that the slot (5) extends at right angles to the gas flow with one half (6a) facing the gas flow and with the other half (6b) facing away from the gas flow. The measuring body (1) is heated by the heating means (12) to a temperature exceeding the ambient tempera-ture by a predetermined value. The temperature is measured in each of the two symmetrical cylinder halves (6a, 6b), whereupon the gas flow is calculated on the basis of the measured temperatures.
Patent CA-2108452-C (CA)
Inventor: MILANESE ROBERT L
IPC: B65D75/36
Filed: 1992-04-27
Granted: 2000-06-20
Abstract: L'invention se rapporte à un emballage pour la vente et la présentation de piles, qui comprend un indicateur de tension monté solidaire dans l'emballage. Une paire de contacts électriques est associée à l'indicateur de tension et ces contacts sont disposés sur l'emballage de façon à être accessibles pour qu'ils puissent être alignés sur les bornes d'une pile placée entre eux. Lorsque les contacts électriques établissent une connexion simultanée avec les bornes de la pile, il se crée un passage de courant à travers l'indicateur de tension, de façon à indiquer visuellement l'amplitude de la tension de charge de la pile.
Patent CA-2109851-C (CA)
Inventor: HENGESBACH WOLFGANG
IPC: F16B13/06
Filed: 1993-11-24
Granted: 1998-06-23
Abstract: The expansible anchor consists of a shank having a threaded portion for fixing an article at its rear end and a reduced cross-sectioned portion with an adjoining expander cone at its front end, and, positioned over the reduced cross-sectioned portion, an expansible sleeve having longitudinal slits forming expansible segments and locking elements protuding beyond the diameter of the expansible sleeve and arranged on the expansible segments. To increase the holding force of the anchor and to allow the expander cone to slide-up and the expansible sleeve to expand in operation-if the drilled hole become enlarged as a result of cracks forming, the locking elements consist of several interconnected punched elements on each expansible segment extending in a longitudinal direction of the expansible segments. Each punched element is triangular with a point directed towards the front end of the expansible segments. An improved method of  making the expansible anchor which includes stamping a blank for the expansible sleeve somewhat undersized from sheet metal, subsequently pressing it and then punching the punched elements in the expansible sleeve is also described.
Patent CA-2122922-C (CA)
Title: Method and composition for treating tumors having high tyrosinase activity
Inventor: RUBIN DAVID
IPC: A61K47/48
Filed: 1992-11-04
Granted: 2004-03-30
Abstract: Tumor cells which have .beta.-glucuronidase and tyrosinase activity are selectively treated by administration of a conjugate of a cytotoxic compound which is a substrate for tyrosinase and glucuronic acid or a pharmaceutically acceptable salt or ester thereof, particularly the triacetylated form of glucuronic acid. Among the cytotoxic phenolic compounds which are substrates for tyrosinase which can be used are tyrosine, 4-hydroxyanisole, butylated hydroxyanisole, L-3,4-dihydroxyphenylalanine, dopamine (3,4-dihydroxyphenethylamine), terbutylcatechol, hydroquinone, resorcinol, 6-hydroxydopa (3,4,6-trihydeoxyphenylalanine) and methyl gallate.
Patent CA-2129819-C (CA)
Title: Acid regeneration
Inventor: WALPOLE ERNEST ALAN
IPC: C01B7/03
Filed: 1993-02-11
Granted: 2006-10-10
Abstract: Regenetatian of hydrochloric acid by hydrolysis of iron chloride in aqueous solution employs a Pelletiser (5) after preconcentration of acid solution in a "Pre-Evaporator" (1). Pelletiser (5) controls pellet mixture to between 12 % and 14 % free water by recycling dried solids from Roasaer (3), from Screen (7), or from dust removal Cyclone (9), and waste liquid from Preconcentrator (1). Preconcentrator (1) is contacted with superheated gas from Fluid Bed Roaster (3). Rotary Drier (6) dries pellets with a concurrent hot gas stream and the pellets are screened at (7) with oversize being sent to a Mill (8), undersize recycled to Pelletiser (5), and sized feed delivered to Roaster (3). HCl is produced as gas offtake from Preconcentrator (1) and passes viva demisting Cyclone into adiabatic Absorption Process section (11), where weak acid liquor and water (10) are added as required.